Oil-baffle for automobile-engines



G. A. RENDAHL.

OIL BAFFLE FOR AUTOMOBILE ENGINES.

APPLICATION FILED JUNE 2, 1919.

1 ,327,'? 7 9, Patented Jan. 13, 1920.

SHEET.I-

2 SHEETS- e. A. RE'ND AHL.

OIL BAFFLE FOR AUTOMOBILE ENGINES. APPLICATION FILED JUNE 2. 191E).

1,327,779. Patented Jan. 13, 1920.

J 2 SHEETSSHEET 2. I I7 5 UNTE %TATE% ATE GEES GEORGE A. RENDAHL, 0FDENVER, COLORADO, ASSIGNOR T0 DONALD P. HOG-AN, 0F DENVER, COLORADO.

OIL-RAFFLE FOR AUTOMOBILE-ENGINES.

Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed. June 2, 1919. Serial No. 301,180.

and to the characters of reference marked thereon, which form a part ofthis specification.

My invention relates to improvements in a baflle structure forautomobile engines of the V-type, my object being to provide a structureof this class arranged between the inner extremities of the cylindersand the crank case, which shall eiilciently perform the function ofpreventing an excess of oil from the crank case from entering thecylinders due to the splash of the cranks as they enter the oil of thecase and the suction due to the outward stroke of the pistons.

In the absence of some eiiicient baflle structure, an excess of oilenters the cylinders, works past the pistons, and is burned in theexplosion compartments of the cylinders, with the result that theelectrodes of the ignition mechanism are fouled, and with the furtherresult that a large amount of carbon accumulates in the cylinders.

As heretofore indicated, the object of my present invention is toovercome this difficulty, and to this end I employ a number of battleplates, which are so constructed that their upper extremities are formedinto hooks which engage the flanges of the engine block at the innerextremities of the cylinders, their lower edges being secured by asingle bolt, whereby these plates are readily attachable andvdetachable. The plates are provided with elongated openings, which arenarrowest at their opposite ends and widest in the center, being soformed as to accommodate the piston rods or stems, their specialconstruction being such as to make the openings as small as possible andstill allow the piston stems or rods to pass without interference.

Having briefly outlined my improvement, I will proceed to described thesame in de tail, reference being made to the accompany? ing drawing, inwhich is illustrated an embodiment thereof. In this drawing:

Figure 1 is a sectional end elevation of an engine or motor of theV-type, showing my improved baflies in use.

Fig. 2 is a section taken on the line 22, Fig. 1, looking toward theright.

Fig. 3 is a section taken on the line 8-3, Fig. 1, viewed in thedirection of the arrows.

Fig. 4 is a erspective view of one of my improved be e plates, shown ona larger scale.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate an internal combustion engine, or motor, ofthe V-type, having a crank case 6 and two sets of-cylinders 7 which areinclined inwardly and downwardly from their outer extremities, as iscommon in this class of motors.

Assuming that the engine has eight cylinders, and there are four in eachset, there will be two baffle plates 8 employed in connection with eachset of cylinders, or four altogether, for an eight-cylinder motor.

Each of these battles consists of a plate 9 having elongated openings 10spaced to receive the piston rods or stems 12 of the pistons 13 of twocylinders 14%. This plate has side members 15 extending at right anglesto the part 9 and corresponding in width with an and member 16, so thatwhen the battle is in position as illustrated in Fig. 1, the part 9 willextend inwardly beyond the inner extremities of the cylinders far enoughto allow the pistons to protrude slightly beyond the open ends of thecylinders. The

end member 16 is provided with a hook 17,

which engages a flange 18 formed on the engine block at the innerextremities of the cylinders. This hook-shaped part 17 is pro vided witha central l-shaped part 19, which fits into the space of correspondingshape between the two cylinders with which every baflle is used, thuscentering the baffle and preventing any lateral movement. The lower edgeof the battle is flanged as shown at 20, the flange consisting of threeparts, as the openings in the plate 9 are continued through the plate asshown at 21, the plate being reinforced above the flange 20 by a metalstrap 22, extending transversely of the plate and being secured theretoby suit able fastening devices 23. In addition. to the connection of thehook-shaped member 17 of time.

the bafiie with the flange 18 of the engine block, the baiiie is securedin place by means of a single bolt, screw or other fastening device 24,which is passed through an opening in the central part of the flange 9/0of the baffle. Hence, when the baffle is placed in position, it is onlynecessary to secure it by a single fastening device 2%, and when it isdesired to remove the baflle, it is only necessary to detach the singlefastening device.

From the foregoing description, the as, of my improved oil bafflestructure will be readily understood.

When the engine is in operation, the pisston stems or rods 12 ely in theopenings 10 of the baffle plates, these openings being shaped toprevent, as far as possible, the entrance of oil from the crank caseinto the engine cylinders, ie to the splash of the cranks and thesuction of the pistons, as heretofore explained. y virtue of the sides15 and the corresponding end men'ibers 16 of each battle, the body 9 ofplate is offset in dly from. the extremities of the cylind r enough topermit the proper inward veinent of the cylinder pistons, as heretof reinc icated.

Attention is called to the fact that in Fig. 2- the baiiie 8 is shown onthe lef"l1and side, but omitted on the right-hand side.

I claim:

1. The combination with an bustion engine, of a battle p 1' applied tothe engine block between 1e ner extremity of the cylinder and the her ofthe crank case, to plate offset flange connected with the bio by theplate is offset by said hang wardly from the inner end of the cylinderThe combination with inter bastion engine or motor of the V- o, ofbaffle plates detachably applied to the engine block or frame betweenthe lllllbi fifk tremities of the cylinders and the chamber of the crankcase, the plates having attaching flanges offset toward the cylinderwhere by the plates are offset inwardly from the cylinders.

3. The combination with an internal conibu-stion engine of the nultiple-cylinder 4' type of bafiies, composed of plates whose n per edgesare shaped to receive a flange of the engine frame at the innerextremities of the cylinders, and means for d'etachably securing thelower ends of the plates to the frame.

4:. The combination with an internal combustion engine of the inntiple-cylinder V- type, of bafiies composed of plates whose up per edgesare shaped to detachably engage a part of the engine frame at the innerextremities of the cylinders, the lower edges of the plates havingopenings to receive devices for detachably connecting the plates withthe frame.

5. The combination with a multiple-cylinder internal combustion engineof the V- type, of baflies detachably applied to the engine frame at theopen extremities of the cylinders, and having elongated openings for thepiston stems.

6. The combination with a multiple-cylinder internal combustion engineof the V- type, of baiiies detachably applied to the engine frame at theopen extremities of the cylinders, and having elongated openings for thepiston stems, these openings being widest at the center, and diminishingin width toward tieir extremities.

7. An oil baffle, comprising a plate having a hook-shaped part at oneend adapted to receive a part of tie engine frame, and a centeringprojection adapted to extend between the two cylinders with which thebaflie is employed.

An oil baffle, comprising a plate having openings for the piston stems,and flanges to offset the inwardly from the cylinders, a heel; fordetachably securing the baflie in place and a centering member"extending be yond the hook.

9. The combination with an internal combustion engine, of a baffle,composed of a plate whose upper edge is shaped to receive a flange ofthe engine frame at the inner extremity of a cylinder, and means fordetachably seeming the lower end of the plate to the frame. 7

10. The combination with a multiple-cylinder internal combustion engine,of b'ailles detachably applied to the engine frame at the openextremities of the cylinders, and having elongated openings for thepiston stems.

In testimony whereof I aiiix my signature.

GEORGE RENDAHL.

It is hereby certified that Letters Patent N 0. 1,327,779, grantedJanuary 13, 1920, upon the application of George A. Rendahl, of Denver,Colorado, for an improvement in Oil-Baffles for Automobile-Engines, wereerroneously issued to- Donald P. Hogan, as Owner of the entire interestin said invention, Whereas said I Letters Patent should have been issuedto the inventor, said Rendahl, and Donald P. Hogan, jointly, said Hoganbeing assignee of one-half interest only in said invention, as shown bythe record of assignments in this oflice; and that the said LettersPatent should be read with this correction therein that the same mayconform to the record of the case in the Patent Office.

Signed and sealed this 10th day of February, A. D., 1920.

M. H. COULSTON, Acting Commissioner of Patents.

[SEAL]

